Luke 6:32-36

32 If you love those who love you, what credit is that to you? For even sinners love those who love them.
33If you do good to those who do good to you, what credit is that to you? For even sinners do the same.
34If you lend to those from whom you hope to receive, what credit is that to you? Even sinners lend to sinners, to receive as much again.
35But love your enemies, do good, and lend, expecting nothing in return.* Your reward will be great, and you will be children of the Most High; for he is kind to the ungrateful and the wicked.
36Be merciful, just as your Father is merciful.